Segment protection scheme for a network
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[0034]In the detailed description that follows, the following acronyms are used:
[0035]
PROMISE:PROtection with MultIple SEgmentsAPF-PBC:Active Path First with Potential Backup CostWDM:Wavelength-division multiplex (or multiplexed)MPLSMulti-protocol label switchingMPλS:Multi-protocol Lambda (i.e., wavelength) switchingDCIM:Distributed Complete Information ManagementDPIM:Distributed Partial Information ManagementAS:Active SegmentBS:Backup SegmentAP:Active PathBP:Backup Path
[0036]In a preferred embodiment, we consider a network G with E directed links (represented by set ε) and V nodes, which can be classified into two categories: edge nodes (ingress or egress), to which users or terminal devices are connected, and core nodes (which are nodes other than an edge node).
[0037]To facilitate our presentation, we will use a tuple (s→d, w) to represent a new request for connection establishment (or release), where s and d are the source (or ingress) and destination (or egress) of the connectio...
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